Can you prove you had the MMR or that you had measles?

There is a quarantine at two California universities, because of this recent measles outbreak. From what I understand, students and professors who have proof of having had MMR were not quarantined.

Do you have your record of immunization? How old are you? I don’t have that handy, maybe my mom still has the record for me in a drawer somewhere. I know I was vaccinated, I assume I only received one dose, since I was born in 1968. As you know, the recommendation changed to two doses sometime in the 80’s (I think it was the 80’s) although, since I was under military care at ages 9–22. I possibly had a different schedule, because the military does all sorts of stuff differently, but I don’t remember getting any shots in the 80’s, except tetanus in ‘89—‘90 timeframe.

I happen to know my rubella immunity was very good ten years ago, but that doesn’t necessarily mean my measles protection is very good, it doesn’t even mean my German measles immunity is still good, but my assumption is both are fine.

If you are over 50 and only had one dose, are you inclined to get another now?

Do you have your records handy if the CDC or WHO come knocking on your door?